When oil prices fluctuate globally, the BAF is imposed to basic ocean freight to stabilize the cost of freight. BAF has derived from the term bunker (fuel storage containers). Such surcharge is added up on the ocean freight by shipping companies to supplement fuel factor costs and termed as BAF.
Popular Answers. 1  A phase, or state of matter, is a domain within a many-body system within which relevant physical properties are uniform. Relevant properties may include chemical composition, stoichiometry, and density, which do not reflect how the components are arranged in space.
Phase is a concept used to explain many physical and chemical changes (reactions). A solid has a definite shape and volume. A liquid has a definite volume but it takes the shape of a container whereas a gas fills the entire volume of a container. You already know that diamond and graphite are solids made up of the element carbon. They are two phases of carbon, but both are solids.